jQuery(document).ready(function() {
    var $secondimage = true;
    var $nummer = 1;
    jQuery("#nav .navbtn").click(function(event) {
        $nummer = jQuery(this).children("a").attr("title");
        jQuery("#backgroundimages img").attr("src", "images/backgroundimages/" + $nummer + ".jpg");
    });

   var intv;
    intv = setInterval(function(nummer){
        if($nummer == 4) {
            $nummer = 1;
        }
        else {
            $nummer++;
        }
        if ($secondimage){
            jQuery('#backgroundimages img#afbeelding2').load(function () {
                jQuery('#backgroundimages img#afbeelding1').fadeOut('slow');
            }).attr("src", "images/backgroundimages/" + $nummer + ".jpg");
            $secondimage = false;
        }
        else {
            jQuery('#backgroundimages img#afbeelding1').load(function () {
                jQuery('#backgroundimages img#afbeelding1').fadeIn('slow');
            }).attr("src", "images/backgroundimages/" + $nummer + ".jpg");
            $secondimage = true;
          }
        }, 8500)   
    
    jQuery("a.fotobox").fancybox({
        'hideOnClick': true,
        'zoomSpeedIn': 0,
        'zoomSpeedOut': 0,
        'overlayShow': true
    });
    
    jQuery("a.fancybox").fancybox({
        'hideOnClick': true,
        'zoomSpeedIn': 0,
        'zoomSpeedOut': 0,
        'overlayShow': true,
        'imageScale': false,
        'centerOnScroll': false
    });

    jQuery("a.youtube").fancybox({
        'hideOnContentClick': false,
        'overlayShow': true,
        'overlayOpacity': 0.7,
        'overlayColor': "#000000",
        'centerOnScroll': true,
        'padding': 4,
        'frameWidth': 640,
        'frameHeight': 385
    });
});